*{
    padding: 0;
    margin: 0;
    list-style-type: none;
}
html,body{
    width: 100%;
    height: 100%;
    background: linear-gradient(#fff,#333) ;
}
.selector {
    width: 140px;
    height: 140px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -70px;
    margin-left: -70px;
    border: 1px solid red;
}
.selector button{
    position: relative;
    border: 0;
    width: 100%;
    height: 100%;
    border-radius:50%;
    background-color: deeppink;
    color: #fff;
    font-size:20px;
    cursor: pointer;
    box-shadow: 0px 5px 10px rgba(0,0,0,0.2);
}
.selector button:hover{
    background: #c71585;
}
.selector ul{
    position: absolute;
    top: -20px;
    left: -20px;
    bottom: -20px;
    right: -20px;
}
.selector ul li{
    position: absolute;
    width: 100%;
    height: 100%;
    transiton:0.8s ease-in-out;
}
.selector ul li input{
    display: none;
}
.selector ul li label {
    position: absolute;
    width: 0;
    height: 0;
    border-radius: 50%;
    top: -120px;
    left: 50%;
    margin-left:0;
    background-color: #fff;
    font-size:0;
    overflow: hidden;
    line-height: 0;
    text-align: center;
    transition: all 0.8s ease-in-out;
}
.selector.open li label {
    width: 80px;
    height: 80px;
    margin-left: -40px;
    line-height: 80px;
    font-size:14px;
}




